diff --git a/clients/common/nm-client-utils.c b/clients/common/nm-client-utils.c
index 642216460..194271a86 100644
--- a/clients/common/nm-client-utils.c
+++ b/clients/common/nm-client-utils.c
@@ -392,7 +392,8 @@ nmc_device_reason_to_string (NMDeviceStateReason reason)
 		return _("OpenVSwitch database connection failed");
 	case NM_DEVICE_STATE_REASON_IP_ADDRESS_DUPLICATE:
 		return _("A duplicate IP address was detected");
-
+	case NM_DEVICE_STATE_REASON_IP_METHOD_UNSUPPORTED:
+		return _("The selected IP method is not supported");
 	}
 
 	/* TRANSLATORS: Unknown reason for a device state change (NMDeviceStateReason) */
diff --git a/libnm-core/nm-dbus-interface.h b/libnm-core/nm-dbus-interface.h
index 4c586d5d8..b2e448dfa 100644
--- a/libnm-core/nm-dbus-interface.h
+++ b/libnm-core/nm-dbus-interface.h
@@ -553,6 +553,7 @@ typedef enum {
  * @NM_DEVICE_STATE_REASON_PARENT_MANAGED_CHANGED: the device parent's management changed
  * @NM_DEVICE_STATE_REASON_OVSDB_FAILED: problem communicating with OpenVSwitch database
  * @NM_DEVICE_STATE_REASON_IP_ADDRESS_DUPLICATE: a duplicate IP address was detected
+ * @NM_DEVICE_STATE_REASON_IP_METHOD_UNSUPPORTED: The selected IP method is not supported
  *
  * Device state change reason codes
  */
@@ -622,6 +623,7 @@ typedef enum {
 	NM_DEVICE_STATE_REASON_PARENT_MANAGED_CHANGED         = 62,
 	NM_DEVICE_STATE_REASON_OVSDB_FAILED                   = 63,
 	NM_DEVICE_STATE_REASON_IP_ADDRESS_DUPLICATE           = 64,
+	NM_DEVICE_STATE_REASON_IP_METHOD_UNSUPPORTED          = 65,
 } NMDeviceStateReason;
 
 /**
diff --git a/src/devices/nm-device.c b/src/devices/nm-device.c
index b4a830fe9..8168957dd 100644
--- a/src/devices/nm-device.c
+++ b/src/devices/nm-device.c
@@ -656,6 +656,7 @@ NM_UTILS_LOOKUP_STR_DEFINE (nm_device_state_reason_to_str, NMDeviceStateReason,
 	NM_UTILS_LOOKUP_STR_ITEM (NM_DEVICE_STATE_REASON_PARENT_MANAGED_CHANGED,         "parent-managed-changed"),
 	NM_UTILS_LOOKUP_STR_ITEM (NM_DEVICE_STATE_REASON_OVSDB_FAILED,                   "ovsdb-failed"),
 	NM_UTILS_LOOKUP_STR_ITEM (NM_DEVICE_STATE_REASON_IP_ADDRESS_DUPLICATE,           "ip-address-duplicate"),
+	NM_UTILS_LOOKUP_STR_ITEM (NM_DEVICE_STATE_REASON_IP_METHOD_UNSUPPORTED,          "ip-method-unsupported"),
 );
 
 #define reason_to_string(reason) \
diff --git a/src/devices/wwan/nm-modem.c b/src/devices/wwan/nm-modem.c
index 1c32791f1..010a2b604 100644
--- a/src/devices/wwan/nm-modem.c
+++ b/src/devices/wwan/nm-modem.c
@@ -685,9 +685,8 @@ nm_modem_stage3_ip4_config_start (NMModem *self,
 		return NM_ACT_STAGE_RETURN_SUCCESS;
 
 	if (strcmp (method, NM_SETTING_IP4_CONFIG_METHOD_AUTO) != 0) {
-		_LOGW ("unhandled WWAN IPv4 method '%s'; will fail",
-		       method);
-		NM_SET_OUT (out_failure_reason, NM_DEVICE_STATE_REASON_IP_CONFIG_UNAVAILABLE);
+		_LOGE ("unhandled WWAN IPv4 method '%s'; will fail", method);
+		NM_SET_OUT (out_failure_reason, NM_DEVICE_STATE_REASON_IP_METHOD_UNSUPPORTED);
 		return NM_ACT_STAGE_RETURN_FAILURE;
 	}